<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script src="http://www.b.com/jquery-2.1.4.min.js"></script>
<script>
    $(function(){
        $.ajax({
            url:"http://www.b.com/1.php?callback=?",
            jsonpCallback:'fh',
            dataType:"jsonp",
            success:function(data)
            {
                console.log(data);
            }
        })
    })
    function fh(data)
    {
        alert(data);
    }
</script>
</body>
</html>